Portion of a display screen showing a user interface



The file of this patent contains as least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

The FIGURE is a front view showing the new design.

The drawing is in color. The broken line showing of a portion of a display screen is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

The ornamental design for a portion of a display screen showing a user interface, as shown and described. 